Earnings Per Common Share (Calculations of Basic and Diluted Earnings per Common Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]
Distributed earnings allocated to shareholders	$ 1,491	$ 1,166	$ 4,256	$ 3,496
Undistributed earnings allocated to shareholders	1,000	3,620	8,098	12,900
Net earnings allocated to shareholders	$ 2,491	$ 4,786	$ 12,354	$ 16,396
Weighted-average shares outstanding	10,589,126	10,530,800	10,574,130	10,522,874
Effect of potentially dilutive shares	103,429	76	90,869	31
Total weighted-average diluted shares outstanding	10,692,555	10,530,876	10,664,999	10,522,905
Earnings per common share - basic	$ 0.24	$ 0.45	$ 1.17	$ 1.56
Earnings per common share - diluted	$ 0.23	$ 0.45	$ 1.16	$ 1.56
Anti-dilutive shares excluded from computation of EPS	81,340	122,500	95,991	147,756